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authorThomas Petazzoni <thomas.petazzoni@free-electrons.com>2013-08-09 22:27:09 +0200
committerJason Cooper <jason@lakedaemon.net>2013-08-12 15:27:01 +0000
commit0d5a6db3aa46faafd0212650bfd709d51240d9da (patch)
treedea9d680f4ae8aea5628ec8d69b72802f0a4bf28 /include/linux/of_pci.h
parent0cbdcfcf427b63b9670e56760ef5e67cd7081b35 (diff)
downloadop-kernel-dev-0d5a6db3aa46faafd0212650bfd709d51240d9da.zip
op-kernel-dev-0d5a6db3aa46faafd0212650bfd709d51240d9da.tar.gz
of: pci: add registry of MSI chips
This commit adds a very basic registry of msi_chip structures, so that an IRQ controller driver can register an msi_chip, and a PCIe host controller can find it, based on a 'struct device_node'. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Rob Herring <rob.herring@calxeda.com> Signed-off-by: Jason Cooper <jason@lakedaemon.net>
Diffstat (limited to 'include/linux/of_pci.h')
-rw-r--r--include/linux/of_pci.h12
1 files changed, 12 insertions, 0 deletions
diff --git a/include/linux/of_pci.h b/include/linux/of_pci.h
index 7a04826..fd9c408 100644
--- a/include/linux/of_pci.h
+++ b/include/linux/of_pci.h
@@ -2,6 +2,7 @@
#define __OF_PCI_H
#include <linux/pci.h>
+#include <linux/msi.h>
struct pci_dev;
struct of_irq;
@@ -13,4 +14,15 @@ struct device_node *of_pci_find_child_device(struct device_node *parent,
int of_pci_get_devfn(struct device_node *np);
int of_pci_parse_bus_range(struct device_node *node, struct resource *res);
+#if defined(CONFIG_OF) && defined(CONFIG_PCI_MSI)
+int of_pci_msi_chip_add(struct msi_chip *chip);
+void of_pci_msi_chip_remove(struct msi_chip *chip);
+struct msi_chip *of_pci_find_msi_chip_by_node(struct device_node *of_node);
+#else
+static inline int of_pci_msi_chip_add(struct msi_chip *chip) { return -EINVAL; }
+static inline void of_pci_msi_chip_remove(struct msi_chip *chip) { }
+static inline struct msi_chip *
+of_pci_find_msi_chip_by_node(struct device_node *of_node) { return NULL; }
+#endif
+
#endif
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